L'Oreal silver formula help please

[Dee5]

So I've read through most of Loreal cocktail threads I could find.
Has anyone used clear +5.1 for creating silver over hilites? (Seen a cocktail chart online)
No 5.1 in stock closest by a long shot is 4.15 order not due til Friday client only booked this eve.
Client usually has hilites toned with po1+po2, but would love the grey now.

What about 9.11 I'm new enough to Loreal so any suggestions are most welcome

 

[daydreams01]

9.11 dialight will be lovely if lifted light enough.

 

[Dee5]

Thanks a mil! It was at 2pm today. In the end I did a quick base break and clean with P02.
The 1/2 clear 3/4 9.11 and a dash of 9.02 just to make sure I killed off any yellow and she LOVED it. I was pretty chuffed with myself lol.
Also did a couple of swatches as I had no 5.1 so used 5.12 s d clear and it's a Devine lilac silver